Softening method for improving lather softening effect

A leather softening and cowhide technology, applied in chemical treatment of small raw hide/big raw hide/leather skin/fur, small raw hide/big raw hide/leather/fur treatment, chemical treatment before tanning, etc., can solve the problem that the effect is difficult to achieve the ideal state, Improve the softening efficiency, improve the lipophilicity, and optimize the softening effect to solve the problems of cowhide structure damage and insufficient softness

Inactive Publication Date: 2017-12-26
安徽鞋匠世家新型鞋材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, excessive acid-base treatment will cause certain damage to the structure of cowhide, resulting in insuffic

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A softening method for improving leather softening effect, comprising the steps of:

[0023] S1, mixing and grinding purple sweet potato red pigment, sorghum red natural pigment and red beige red pigment to obtain a dye mixture;

[0024] S2, put the dye mixture into water, shake well to get the dye solution;

[0025] S3, soaking the leather in the soaking solution;

[0026] S4, add water and soaked leather successively in the dye vat, stir for 10 minutes, add dye solution, stir for 35 minutes to obtain the primary mixture;

[0027] S5. Put the initial mixture into the infrared dyeing sample machine, add malic acid aqueous solution, heat up to 35°C, keep warm for 65min, add acetic acid aqueous solution, keep warm for 35min, cool down to 30°C, keep warm for 5min, leave the machine, and wash with deionized water Clean and dry.

Embodiment 2

[0029] A softening method for improving leather softening effect, comprising the steps of:

[0030] S1, mixing and grinding purple sweet potato red pigment, sorghum red natural pigment and red beige red pigment to obtain a dye mixture;

[0031] S2, put the dye mixture into water, shake well to get the dye solution;

[0032] S3, soaking the leather in the soaking solution;

[0033] S4, add water and soaked leather successively in the dye vat, stir for 20 minutes, add dye solution, stir for 25 minutes to obtain the primary mixture;

[0034] S5. Put the initial mixture into the infrared dyeing sample machine, add malic acid aqueous solution, heat up to 45°C, keep warm for 45min, add acetic acid aqueous solution, keep warm for 55min, cool down to 20°C, keep warm for 10min, leave the machine, and wash with deionized water clean, dry

[0035] Wherein, the leather is cowhide;

[0036] In step 1, the weight ratio of purple sweet potato red pigment, sorghum red natural pigment and ...

Embodiment 3

[0039] A softening method for improving leather softening effect, comprising the steps of:

[0040] S1, mixing and grinding purple sweet potato red pigment, sorghum red natural pigment and red beige red pigment to obtain a dye mixture;

[0041] S2, put the dye mixture into water, shake well to get the dye solution;

[0042] S3, soaking the leather in the soaking solution;

[0043] S4, add water and soaked leather successively in the dye vat, stir for 15 minutes, add the dye solution, stir for 30 minutes to obtain the primary mixture;

[0044] S5. Put the initial mixture into the infrared dyeing sample machine, add malic acid aqueous solution, heat up to 40°C, keep warm for 55min, add acetic acid aqueous solution, keep warm for 45min, cool down to 25°C, keep warm for 7min, leave the machine, and wash with deionized water clean, dry

[0045] Wherein, the leather is cowhide;

[0046] In step 1, the weight ratio of purple sweet potato red pigment, sorghum red natural pigment a...

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PUM

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Abstract

The invention discloses a softening method for improving a lather softening effect. The softening method comprises the first step of washing, and specifically, fresh cattle hide is flushed with plant extract after dirt attached to the surface of the cattle hide is removed; the second step of depilating, specifically, after most hair on the surface of the washed cattle hide is cut off, a hair removing agent is used for treating the cattle hide, and remaining cattle hair is removed; the third step of degreasing, specifically, the depilated cattle hide is put into water, sodium acetate, sodium chloride and degreasant are sequentially added, stirring is carried out, sodium carbonate is added, stirring is carried out, pH is adjusted, and standing and liquid draining are carried out; and the fourth step of softening, specifically, the degreased cattle hide is put into water, alkyl polyglucoside and rice phytic acid are sequentially added, the temperature is raised, heat preservation stirring is carried out, the temperature is raised, pH is adjusted, acid proteinase is added, and stirring is carried out. By means of the softening method, environmentally friendliness is achieved, no pollution is caused, and the relatively good leather softening effect is achieved.

Description

technical field [0001] The invention relates to the technical field of leather manufacture, in particular to a softening method for improving the softening effect of leather. Background technique [0002] Leather is denatured and non-perishable animal skin obtained through physical and chemical processing such as depilation and tanning. China's leather industry, after adjusting and optimizing its structure, has initially formed a number of leather production characteristic areas and professional markets throughout the country with clear division of labor, outstanding characteristics, and playing a decisive role in stimulating the local economy. [0003] One of the main raw materials for cowhide tanning has a certain representativeness in the international tanning industry. The characteristics of cowhide are that the epidermis is thin, accounting for about 0.5% of the total thickness of the skin, the pores are small and dense, the grain is fine, the hair roots and sweat glan...

Claims

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Application Information

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IPC IPC(8): C14C1/06C14C1/08
CPCC14C1/06C14C1/08
Inventor 周亚东尹斌
Owner 安徽鞋匠世家新型鞋材科技有限公司
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